Apparatus eob feeding blanks to screw-machines



ITED STATES PATENT OFFTCE.

THOMPSON NEVBURY, OF TAUNTON, MASSACHUSETTS.

APPARATUS FOR FEEDING BLANKS TO SCREW-MACHINES.

Specification of Letters Patent No. 9,648, dated April 5, 1853.

To all whom t may concern Be it known that I, THOMPSON NEWBURY, ofTaunton, in the county of Bristol and State of Massachusetts, haveinvented certain new and useful Improvements for Feeding Screw-BlanksInto Theading-Machines and for other Purposes, the following being afull, clear, and exact account thereof, reference being had to theaccompanying drawing, which forms a part of this description.

My improved feeding apparatus consists of a hopper (a) shown in plan andelevation in Figures 1 and 2. In the bottom of this hopper (a.) there isan oblong opening extending nearly its whole length and marked (b). Thisopening is surrounded by a flange forming a spout of the same figure asthe opening, into which is fitted a slide or piston (c) constructed asfollows: The form of the piston and its size correspends with theinterior of the spout. On its lower end there is a small flange (0') todetermine the distance it can be forced upward into the hopper. Thepiston or slide (c) is in two parts, ahorizontal division (d) runningthrough it at a distance sufficiently below the top to admit the longestscrew to be fed by it. This upper portion of the slide is jointed by oneend to the lower part at (e) and at the opposite end there is a springat-tached that holds it down to its place. There is a deep recess orslot (f) in its upper edge which is open at the jointed end. A bar (g)runs up through an opening in the center of the lower part of the slideand is jointed to the upper one near the center. By this bar the wholeslide is worked up and down, as will presently appear, by being attachedto any moving power affixed to the machine.

The operation is as follows: A sufficient number of screw blanks are putinto the hopper and the slide is put in motion. It descends a littlebelow the inclined sides of the hopper and the screw blanks fall uponit, a portion of them falling with their shanks down in the slot (f)above named in the top of the piston or slide, and thus becomingsupported perpendicularly by their heads. The slide is then forced up bythe bar or rod (g) till the flange (c) strikes the bottom of the spoutlin which it works and by the continued motion of the rod or bar (g) theupper portion is canted on its hinge over toward a permanent spout orguide (7L) affixed to the side of the hopper, into which it deposits theblank by sliding it out of its recess or slot. As the rod (g) vagaindescends the upper part of the slide is closed back to its place by thespring and then the whole slide descends together for a fresh supplyfrom the hop per. By a continuous motion of these parts a suficientsupply is insured to the threading or other machine. If there is notsufiioient jar in the machine itself to cause the screw blanks, screwsor other article to be delivered sufliciently fast some well knowndevice may be applied for that purpose.

Having thus fully described my new feeding apparatus what T claimtherein as new, and for which I desire to secure Letters Patent is:

The slide substantially as herein described passing up through thebottom of the hopper in the manner set forth.

THOMPSON NEWBURY.

Witnesses:

J. J. GREENOUGH, ToLMlE CAMPBELL.

